Sony patents method to compress 3D data by predicting surface angles
Sony describes a way to make 3D data files smaller by guessing the direction of surfaces, known as normal vectors, based on other already-saved information. Instead of saving the full direction for every point, the system only saves the small difference between the guess and the actual direction. This reduces the amount of data needed to store or send complex 3D shapes.
In the filing’s own words
There is provided an information processing device and method that make it possible to suppress deterioration in encoding efficiency. A normal vector serving as an attribute corresponding to a 3D data processing target geometry is predicted on the basis of information other than the normal vector, a prediction value of the normal vector is derived, a prediction residual that is a difference between the normal vector and the prediction value corresponding to the processing target geometry is generated, and the prediction residual of the normal vector corresponding to the processing target geometry is encoded. The present disclosure may be applied to, for example, an information processing device, an electronic apparatus, an information processing method, a program or the like.
What exactly they claim (claim 1)
1. An information processing device comprising: a normal vector prediction section configured to predict a yet-to-be-encoded normal vector of an encoding target point on a basis of encoded information different from the yet-to-be-encoded normal vector obtained through an encoding process of point cloud data, and derive a prediction value of the yet-to-be-encoded normal vector, in the encoding process; a prediction residual generation section configured to generate a prediction residual that is a difference between the prediction value and the yet-to-be-encoded normal vector; and a prediction residual encoding section configured to encode the prediction residual.
Facts
- Company
- Sony (Sony Group Corporation)
- Official title
- INFORMATION PROCESSING DEVICE AND METHOD
- Publication number
- US20260281432A1
- Application number
- 18878074
- Filed
- Jul 20, 2023
- Published
- Sep 17, 2026
- Inventors
- 3
- Claims
- 20
Classified under
H04N 19/597 Electricity & electronicsH04N 19/136 Electricity & electronicsH04N 19/42 Electricity & electronicsH04N 19/593 Electricity & electronicsH04N 19/96 Electricity & electronicsMore from Sony in AI & software
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Summaries are simplified from the filing’s own abstract and first claim. A patent filing is not a product announcement.
Patent data and drawings: U.S. Patent and Trademark Office (USPTO). Nebula is not affiliated with or endorsed by the USPTO.